Supermicro is showing off its upcoming machines based on AMD’s 6 thGeneration EPYC ‘Venice’ processors, Instinct MI 450 accelerators, and, of course, Nvidia’s Vera Rubin-based solutions. Arguably, the most important product that the company demonstrated at its CEO’s keynote is the VR 200 NVL 72 rack that uses Vera CPUs and Rubin GPUs. The machine, just like other upcoming liquid-cooled systems from Supermicro will use the company’s all-new coolant that has a 1000x higher electrical impedance compared to today’s mixtures, which may be quite important for next-generation AI machines.
“Our new coolant [uses a new] formula [and] reaches up to 1,000 times higher electrical impedance than a standard cooler,” said Charles Liang, chief executive of Supermicro, during his keynote speech atComputex. “In case there are small leaks, when you have a high electrical impedance, the system will not [shut down] [and will] keep running.”
Conventional water-based coolants used in direct liquid cooling systems have electrical conductivity (albeit lower than water), so if coolant leaks onto a motherboard, GPU, power delivery circuitry, or connectors, it can create leakage currents or even short circuits. A coolant with 1000 times higher electrical impedance is far more resistant to current flow, which reduces the likelihood that a minor leak will immediately shut down a system or damage electronic components. This is important as modern rack-scale AI solutions like Nvidia’s VR 200 NVL 72 are rumored to cost around $8 million, so their protection is crucial. Also, reducing downtime in AI data centers is important as these machines must make money for their owners.
Unfortunately, Supermicro’s claim is difficult to evaluate because the company does not disclose specifications of the coolant, such as conductivity (µS/cm), resistivity (MΩ·cm), or dielectric strength (kV/mm). It also remains tight-lipped about the baseline coolant used for comparison. Since modern water-glycol coolants are already fairly resistant, a 1000-fold improvement sounds significant, but without the actual details, it is impossible to determine the practical magnitude of the advancement. What Supermicro claims is that a minor coolant leak would be less likely to force an immediate server shutdown, which means lower downtime risk in large AI deployments. However, we have no idea whether the new coolant behaves more like a dielectric fluid and less like water-glycol coolants.
The new coolant will be used in all new liquid-cooled systems from Supermicro, including the upcoming AMD Helios and Nvidia VR 200 NVL 72 machines. Given that Nvidia nowadays does not leave many ways for its partners to differentiate, the coolant with 1000 times higher electrical impedance than conventional coolants will likely be among the key selling points of Supermicro’s Nvidia-based offerings.
Speaking of Nvidia’s AI systems, Supermicro is on track to release its Vera Rubin-based systems in the second half of this year, just like other makers. Supermicro intends to offer both NVL 72-rack-scale machines based on Nvidia’s Vera CPUs and Rubin GPUs, as well as Rubin DGX systems with different processors.
As for AMD’s side of matters, Supermicro is also on track to release MI 455X-based Helios rack-scale solutions in the second half of the year, though the company does not disclose whether these use UALink or UALink over Ethernet interconnections. In addition, Supermicro is also on track with 1-way and 2-way servers based on AMD’s 6 thGeneration EPYC ‘Venice’ processors that are made using TSMC’sN 2 process technology. These machines are also expected to hit the market in 2026.
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Anton Shilov is a contributing writer at Tom’s Hardware. Over the past couple of decades, he has covered everything from CPUs and GPUs to supercomputers and from modern process technologies and latest fab tools to high-tech industry trends.